http://articles.mercola.com/sites/articles/archive/2000/05/14/leaky-gut.aspxThe small intestine contains billions of cells, which are packed tightly together to keep bacteria, viruses, and other toxins out of the body's tissues. New research findings may have identified the protein that regulates this protective barrier, holdingenCommunityServer 2008.5 SP1 (Build: 31106.3070)